* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #38bdf8;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .my-logo:hover {
            animation: logo-pulse 0.5s ease;
        }
        @keyframes logo-pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 6px;
            font-size: 1.05rem;
        }
        .main-nav a:hover {
            background-color: rgba(96, 165, 250, 0.15);
            color: #93c5fd;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #cbd5e1;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #94a3b8;
            border-bottom: 1px solid #334155;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #60a5fa;
        }
        .breadcrumb i {
            margin: 0 0.5rem;
            font-size: 0.8rem;
        }
        main {
            padding: 2rem 0;
            background-color: #1e293b;
            border-radius: 12px;
            margin-top: 1rem;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px solid #475569;
        }
        h1 {
            font-size: 3.5rem;
            background: linear-gradient(90deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .subtitle {
            font-size: 1.3rem;
            color: #cbd5e1;
            max-width: 800px;
            margin: 0 auto 1.5rem;
        }
        .meta-info {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: #94a3b8;
            font-size: 0.95rem;
        }
        h2 {
            font-size: 2.5rem;
            color: #38bdf8;
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #475569;
        }
        h3 {
            font-size: 2rem;
            color: #67e8f9;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.5rem;
            color: #a5b4fc;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
            padding: 1.5rem;
            border-left: 4px solid #3b82f6;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .featured-image {
            margin: 3rem auto;
            max-width: 900px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
            transition: transform 0.5s ease, box-shadow 0.5s ease;
        }
        .featured-image:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #94a3b8;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .interactive-section {
            background-color: #0f172a;
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
        }
        .interactive-section h3 {
            color: #fbbf24;
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #cbd5e1;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.75rem 1rem;
            background-color: #334155;
            border: 1px solid #475569;
            border-radius: 8px;
            color: #f1f5f9;
            font-size: 1rem;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #60a5fa;
            box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.3);
        }
        button, .btn {
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            color: white;
            border: none;
            padding: 0.85rem 2rem;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #2563eb, #7c3aed);
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(0, 0, 0, 0.3);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: rtl;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #475569;
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #fbbf24;
        }
        .comment {
            background-color: #334155;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            border-left: 4px solid #60a5fa;
        }
        .comment-author {
            font-weight: bold;
            color: #38bdf8;
            margin-bottom: 0.5rem;
        }
        .comment-date {
            color: #94a3b8;
            font-size: 0.9rem;
            margin-bottom: 0.75rem;
        }
        footer {
            background-color: #0f172a;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
            border-top: 1px solid #334155;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #38bdf8;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: #cbd5e1;
        }
        .footer-links a:hover {
            color: #60a5fa;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background-color: #334155;
            padding: 0.5rem 1rem;
            margin: 0.5rem 0.5rem 0.5rem 0;
            border-radius: 20px;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        friend-link:hover {
            background-color: #475569;
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.2rem; }
            .main-nav ul { gap: 1rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .hamburger {
                display: block;
                order: 1;
            }
            .my-logo {
                order: 2;
                font-size: 1.8rem;
                flex-grow: 1;
                text-align: center;
            }
            .main-nav {
                order: 3;
                flex-basis: 100%;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .main-nav a {
                display: block;
                padding: 0.75rem;
                text-align: center;
                background-color: #334155;
                border-radius: 8px;
            }
            .meta-info {
                flex-direction: column;
                gap: 0.5rem;
                align-items: center;
            }
            .interactive-section {
                padding: 1.5rem;
            }
        }